Tractor.



E. AQRUMELY. TRACTOR. APPLICATION FILED APR.11, 1912.

1 055 0 5; Patented Mar.4,191 3.

OOOOOO'OOO"OOOOO OOOO v To all whom, it may concern .the plows N N. These,

" UED STATES PATENT oF on EDWARD A; RUMELY, or LAPORTE, INDIANA, assrelvonjro- M..-I{ UMELY COMPANY, -I

01: LAPORTE, INDIANA, A-CQRPOIlEtA'IJIO N OF INDIANA. I

- 'raacron.

- Specification of Letters Yatent.

Application filed April 11, 191a Serial mfeaonsaf Be it known that I, EDWARD AnoYsIUs RUMELY, a citizen of thesUnited States, residing at Laporte, i n the county of aporte and State of Indiana, have invented a certam new and useful Improvement in Trac tors, of whlch the following is a specificat1on.

My invention relates to means forequalizlng the slippage of the drive wheels of a tractor articularly in cases where for some reason is e load is to be drawn by a tractor u'nderLcircumstances which make it necessary to throw an excess of that load on one wheel. My invention is illustrated in the accompanying drawing which presents a "fragmentary view in a more orless diagrammatic way of the rear end of a tractor with a gang of plows attached thereto.

A A areportions of the tractor frame, B

the drive shaft, 0 one wheel'and D the other or, In this case, the furrow wheel. These wheels are driven in the usual manner as, for example, by a short shaft E, pinion F and internal gear G. The'shaft emerges, of course, from a casing H in which are the differential gears driven from the jackshaft J by means of the pinion 'K. To the rear frame piece is attached by means of the chains L the frame M on which are arranged of course, are arranged along a line at a sharp inclination to the line of forward motion of the tractor and gang plows. This is only one example of many where the load is arranged so that it is thrown more onone. wheel than on another and in all such cases the slippage on that wheel is excessive. The usual inequalities between the slippage due to the varying load of the two driving wheels can be taken care of by the differential but in a case like that illustrated other means must be provided. Either wheel, as the case may be, can have its slippage increased or diminished to effect the accommodation. In this case I show the lateral extensi n 0 on-the wheel D which gives it a wider face or ground \contactmg surface.

PatentedMa1a4,1913.'i

drawing isto be taken as in a sense diagrammatic and" that the partscan be. very dif ferently. constructed, proportioned and 'ar,,

ranged and some be removed and others be substituted for them without departing from the .spirit of my inventions 4 I shall explain the use and operation. of

ny -inventionby' describing its application a gang of to a tractor intended to draw plows. Such tractors commonly have two. front and two rear wheels the latter traction wheels. Theplows are arranged of course, on a line sharplylin'clined'to the line of forward movement .;a d the traction wheel next to the furro must, of course, be in front of the first plow inthe gang. This obviously throws a greater burden on the wheel at the furrow side causing a tendency to slip. In practice this is counteracted by setting the forward wheels at an angle.

I propose now to suppl'eihlent the efiect of the difierential between the two"tracti on wheels, which is suflicient to take care of the inequality in the slip of the two wheels for ordinary purposes, by means associatedwith the furrow side wheel to increase its grip on the ground or diminish its tendency to slip. In the form in which I have shown my invention as applied this wheel is intended to have a broader face to bear upon the ground.

The same effect, of course, could be ob-- tainedin various other ways. *Tl'1e essential point is to equalize the slippage between the wheels by either increasing-the slippage of one or diminishing-the slippage of the other. In the case illustratedthe slippage of the furrow side wheel is diminished because it is provided with a more extended face to bear upon the soil.

I claim:

1. In a tractor having a pair of drive wheels the combination of a differential between said wheels with separate means for equalizing their slip.

2. In a tractor having a pair of drive wheels the combination of a dillercntial be.- tween said wheels with separate means for diminishing the slip of one of them.

3. In a tractor having a pair of drive wheels the combination of a' differential hes 4. Ina tractor having a pair of drive Wheels the combination of a difierential between said wheels with separate means as sociated with one Wheel for diminishing the slip of one d-f them.

5. In atract'or having .a pair of drive Wheels the'com'bina'tion of a differential between said heels with means attached to one of said Wheels to diminish its tendency 6. In a tractor having a pair of drive Wheels the combination 01? a differential between said 'Wheels With means-laterally proco piesrof'this patent may be olitained for five centsleach; by addre jecting from one of said wheels to diminish I its tendency to slip.

7. In a tractor having a pair of drive wheels the combination ofa differential interposed between them and a'lateral extension on one of said wheels to givejt a Wider face than the other.

Signed at Laporte, Indiana.

. EDWARD A. RUMELY.

- -Witne sses:

JOHN A. SEQER,

FRANCIS W. PARKER, Jr.

sting the Commissioner 0! Patents,

' Washington, 11 G. 

